Prepping for grad exams while living with his brother Zhang Lei, Jiang Ye jerks off spying on his showers. At the library, he lets a lookalike fuck and creampie his ass in a toilet stall. Spotting blood on his underwear that night, his brother pins him to the couch, rams him balls-deep, then drags him to the bedroom behind locked doors to keep pounding. Incest, voyeurism, double penetration.